Hi,
I am connecting 4 USRPs to the Octoclock and my host CPU, and created two of my own blocks (one in python and one in C++), but neither of them runs very long, as countless Ss are streamed out and then finally Us, which signify underruns and so they stop transmitting. I was told that implementing the block in Python would be slower, as expected, which could be the reason why my computer is not able to transmit samples to the USRPs quickly enough. However, when I tried to implement in C++, which is supposed to be much faster, I'm seeing the same problem.
One key piece of information is that both the python and C++ implementations work about 75% of the time when 2 USRPs are connected, but with 4, it fails quickly close to 100% of the time, so it is clear that adding more antennas is causing issues, but I don't know what I can do about it. My project requires multiple antennas, so this is a major problem, unfortunately. Any help would be much appreciated. Thank you so much.